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Bard part 5151-049 is an OEM condenser fan blade used to restore proper airflow through the outdoor coil on compatible Bard wall mount and packaged HVAC units. This is a 20 inch, 4 blade fan designed for clockwise (CW) rotation, helping the unit reject heat efficiently and maintain stable head pressure during cooling operation. If your original blade is bent, cracked, noisy, or out of balance, replacing it with the correct Bard blade helps protect the fan motor and improves overall system reliability. Always confirm the blade diameter and rotation direction (CW) against your unit model and data plate before ordering to ensure correct fit and safe operation.